Study of local environment of Ag in Ag/CeO2 catalyst by EXAFS

P. R. Sarode, K. R. Priolkar, Parthasarathi Bera, M. S. Hegde, S. Emura, R. Kumashiro

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    The combustion synthesized Ag/CeO2 catalysts have been characterized by Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy at the Ag K-edge. It has been found that Ag+ like species is present in 1% Ag/CeO2 catalyst, whereas mostly Ag metal clusters are found in 3% Ag/CeO2. The analysis of EXAFS spectra indicates that about one oxygen atom is coordinated to Ag central atom at a distance of 2.19 Å in 1% Ag/CeO2 catalyst along with eight coordinated Ag-Ag bond at 2.86 Å. The Ag-O bond is absent in 3% Ag/CeO2.

    Original languageEnglish
    Pages (from-to)1679-1690
    Number of pages12
    JournalMaterials Research Bulletin
    Volume37
    Issue number9
    DOIs
    Publication statusPublished - 2002 Aug 8

    Keywords

    • A. Inorganic compounds
    • B. Chemical synthesis
    • C. XAFS

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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